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Tunnel Takes Cathodic Protection

by Guang-Nan Fanjiang, Proj. Mgr.; Weidlinger Associates, New York, NY,
Michael Mazzuca, Manager; Nat. Sales &Marketing, ELGARD Corp., Chardon, OH,
Lin Nathan, Facility Engr.; Brooklyn Battery Tunnel, Triborough Bridge & Tunnel Authority, New York, NY,
Robin Pawson, Consulting Engr.; Cybex Corp., St. Catherines, Ontario, Canada,


Serial Information: Civil Engineering—ASCE, 1992, Vol. 62, Issue 11, Pg. 59-61


Document Type: Feature article

Abstract:

Cathodic protection is nothing new for bridges and parking garages, but it has never been installed in a tunnel�until now. As part of a $15 million rehabilitation project, the method is being used to arrest extensive corrosion in the roadway of New York City's 2 mi long Brooklyn-Battery Tunnel. The cathodic-protection system is expected to arrest the existing corrosion in the tunnel roadway and gain 25 or more years of useful operation. It consists of 42 independently controlled zones, each measuring 3,000 sq ft. The full rehabilitation project, which includes reconstruction of the underside of the roadway deck, reinforcement of corroding steel beams and installation of the titanium-based anode mesh, will be completed in November 1992.

Subject Headings: Tunnels | Highways and roads | Corrosion | Steel decks | Steel beams | Rehabilitation | Project management

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